CN109632573A - One kind is for supercritical pressure fluid flowing heat transfer visual experimental apparatus under the conditions of uniform heat flux - Google Patents
One kind is for supercritical pressure fluid flowing heat transfer visual experimental apparatus under the conditions of uniform heat flux Download PDFInfo
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- CN109632573A CN109632573A CN201910055225.XA CN201910055225A CN109632573A CN 109632573 A CN109632573 A CN 109632573A CN 201910055225 A CN201910055225 A CN 201910055225A CN 109632573 A CN109632573 A CN 109632573A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention provides a kind of for supercritical pressure fluid flowing heat transfer visual experimental apparatus under the conditions of uniform heat flux, belong to supercritical pressure fluid flowing heat transfer field, characteristics and the nowed forming feature such as convective heat transfer, the TRANSFER BY PULSATING FLOW of supercritical pressure fluid in rectangular channel under multi-boundary Condition coupling can be investigated, provides experimental data support to differentiate the abnormal physical mechanism and trigger condition occurred with TRANSFER BY PULSATING FLOW phenomenon of supercritical pressure fluid heat transfer.
Description
Technical field
The invention belongs to supercritical pressure fluid flowing heat transfer fields, and in particular to one kind is for studying multi-boundary Condition coupling
Cooperate the experiment of supercritical pressure fluid convective heat transfer and pulsating flow character and nowed forming feature in lower rectangular channel
Device, more particularly to it is a kind of for supercritical pressure fluid flowing heat transfer visual experimental apparatus under the conditions of uniform heat flux.
Background technique
Supercritical pressure fluid is applied in multiple industrial circles, including supercritical steam power plant, nuclear reactor
Cooling water system, supercritical water oxidation, aircraft engine thermal protection, supercritical carbon dioxide circulation, supercritical organic Rankine
Circulation etc..For diabatic process, since fluid is in supercritical pressure state, thermophysical property such as density, is led viscosity
Hot coefficient and specific heat at constant pressure etc. can change with high temperature, especially near pseudo-critical temperature, lead to supercritical pressure flow
The flowing of body and HEAT TRANSFER LAW show the feature different from subcritical fluids, are mainly shown as heat transfer exception and TRANSFER BY PULSATING FLOW etc.
The generation of unconventional phenomenon.So-called heat transfer is abnormal, refers to the cataclysm of supercritical pressure fluid thermal physical property parameter and thus brings
Thermal acceleration effect and buoyancy lift act under various boundary caused by heat conduction reinforced or corruptions；So-called Pulsating Flow
It is dynamic, refer to supercritical pressure fluid caused flowing and heat transfer dynamic oscillation under near wall region fluid density and viscosity comprehensive function
Phenomenon.Although educational circles is to supercritical pressure fluid flowing and heat transfer research lasting for years, since the process is by a variety of couplings
Conjunction factor (boundary conditions such as experimental subjects and structure, flowing, heat transfer) influences, and the specific influencing mechanism of each factor is still not clear,
The synchronous heat-transfer character that carries out tests the important research approach for being undoubtedly with flow visual measurement and exploring its flowing heat transfer mechanism.
Currently, supercritical pressure fluid heat transfer visual research is mostly real by the preferable round pipe road form of pressure-bearing property
Existing, advantage is that structure is simple, easy to connect and high pressure resistant, and but, which usually passes through ring flange and be connected to heating pipeline
Later, it can not achieve the flow visual measurement of medium in a heated condition, and then can not accurately be obtained from nowed forming degree
Supercritical pressure fluid heat transfer is abnormal and flows the key message of pulsation.In addition, part research also has been achieved under heating condition
The visualization measurement of flow media in the channel of rectangular section, but since the bearing capacity of rectangular channel is limited, correlative study is most
Towards lower pressure, application range is restricted.How under wide cut pressure condition realize supercritical pressure fluid flowing with
Conduct heat visualization measurement, to the genesis mechanism important in inhibiting for exploring supercritical pressure fluid heat transfer exception and flowing pulsation.
The content of background technology part is only the technology that inventor is known, not the existing skill of natural representative this field
Art.
Summary of the invention
For the prior art there are one or more of problem, the present invention provides a kind of under the conditions of uniform heat flux
Supercritical pressure fluid flowing heat transfer visual experimental apparatus, described device include internal flow heat transfer experiment section and external pressure
Protect chamber；
Wherein the internal flow heat transfer experiment section includes fluid channel skeleton (6.4), the fluid channel skeleton (6.4)
Upper and lower two sides be each provided with groove, be each provided in the upper and lower groove METAL HEATING PROCESS item (6.2), the upper and lower groove
On be correspondingly arranged on gland；
The gland includes upper press cover (6.5) and lower cover (6.3), wherein being provided with fluid on the upper press cover (6.5)
Inlet temperature measured hole, fluid outlet temperature measured hole, wall temperature measurement hole, heating metal strip fairlead, Thermocouple on Surface of Fuel Element
(6.6) and fluid temperature (F.T.) measures thermocouple (6.7)；
Be provided on the lower cover (6.3) fluid inlet pressure measured hole, outlet pressure measured hole, wall temperature measurement hole,
Heat metal strip fairlead, pressure-measuring pipe (6.1) and Thermocouple on Surface of Fuel Element (6.6)；
The viewable portion of the fluid channel skeleton (6.4) is through-hole and surrounding is provided with waterline, the fluid channel skeleton
(6.4) arranged on left and right sides is provided with visual window (6.9), and centre is sealed by Graphite pad (6.8)；
The import and export of the fluid channel skeleton (6.4) respectively with working medium inlet tube (4.2) and working medium outlet tube (7.2)
It is connected；
The external pressure protection chamber covers outside the internal flow heat transfer experiment section, including insulated end cover (1), connecting pin
Cover (2), insulated enclosure gasket (3), pressurising chamber (4), can opticoel (5) and pressure measuring cavity (7)；Wherein the insulated end cover (1) passes through
Be threadedly coupled, the connection end cap (2), insulated enclosure gasket (3), pressurising chamber (4), can opticoel (5) and pressure measuring cavity (7) pass through method
Orchid is connected.
Above-mentioned Thermocouple on Surface of Fuel Element (6.6) and fluid temperature (F.T.) measurement thermocouple (6.7) are connected through a screw thread and are fixed on
On gland；The pressure-measuring pipe (6.1) and Thermocouple on Surface of Fuel Element (6.6) are connected through a screw thread and are fixed on lower cover；And/or
Above-mentioned visual window (6.9) has boss and waterline, is bolted on a left side for the fluid channel skeleton (6.4)
Right two sides；And/or
The import and export of above-mentioned fluid channel skeleton (6.4) respectively with working medium inlet tube (4.2) and working medium outlet tube (7.2)
It is connected by screw thread.
The material of above-mentioned lower cover (6.3), fluid channel skeleton (6.4) and upper press cover (6.5) be insulation, hardness be >=
88MPa, thermal coefficient be >=25W/mK, it is maximum the use of temperature be >=1500 DEG C, compression strength for >=2500MPa aluminium oxide
Ceramic material.Such as the material of above-mentioned lower cover (6.3), fluid channel skeleton (6.4) and upper press cover (6.5) is insulation, hardness
The aluminium oxide ceramics that temperature is 1500 DEG C, compression strength is 2500MPa is used for 88MPa, thermal coefficient 25W/mK, maximum
Material.
It is >=1.00 × 10 that above-mentioned METAL HEATING PROCESS item (6.2), which selects resistivity,-06The nichrome of Ω m；It can opticoel (5)
Using temperature and pressure using maximum with visual window (6.9) is respectively the steel that >=350 DEG C and >=3MPa and light transmittance reach 95%
Change glass.Such as it is 1.00 × 10 that above-mentioned METAL HEATING PROCESS item (6.2), which selects resistivity,-06The nichrome of Ω m；It can opticoel (5)
Using temperature and pressure using maximum with visual window (6.9) is respectively the tempering glass that 350 DEG C and 3MPa and light transmittance reach 95%
Glass.
Above-mentioned internal flow heat transfer experiment segment length 320mm, and import and export respectively has a pressure tap and thermometer hole；The wall
Temperature measurement hole shares six pairs above and below, operating condition can increase or shorten experiment segment length according to specific experiments, increase or decrease accordingly
Wall temperature measurement hole number.
Wall temperature measurement bottom hole portion is logical away from METAL HEATING PROCESS item (6.2) and fluid in above-mentioned upper press cover (6.5), lower cover (6.3)
Road wall surface is equidistant away from METAL HEATING PROCESS item (6.2).
Above-mentioned internal flow heat transfer experiment section flow channel cross-sections operating condition can pass through according to specific experiments having a size of 4 × 2mm
Fluid channel skeleton (6.4) size and visual window (6.9) boss size are sized.
Above-mentioned insulated end cover (1) is connected by internal screw thread with connection end cap (2), material selection maximum working pressure for >=
The insulating materials of 3Mpa, such as material selection maximum working pressure are the insulating materials of 3Mpa, the setting of insulated end cover (1) side-lower
There are wire guide (1.1).
Above-mentioned connection end cap (2) includes that thermocouple signal output terminal (2.1) and electrode connecting end are sub (2.2), and side
With external screw thread；All thermocouple connecting wires are connected by thermocouple signal output terminal (2.1) with acquisition Instrumen device；Electricity
It is connected by conducting wire with METAL HEATING PROCESS item (6.2) inside pole connection terminal (2.2), outside is connected with DC power supply.
Above-mentioned pressurising chamber (4) is made of stainless steel, including intracavitary pressure charging pipe (4.1), working medium inlet tube (4.2) and experimental section
Inlet pressure connecting pipe (4.3)；And/or
The pressure measuring cavity (7) is made of stainless steel, including intracavitary pressure-measuring pipe (7.1), working medium outlet tube (7.2) and experimental section
Outlet pressure connecting pipe (7.3).
Based on above technical scheme, the present invention provides a kind of for supercritical pressure fluid flowing under the conditions of uniform heat flux
Conduct heat visual experimental apparatus, can investigate supercritical pressure fluid under multi-boundary Condition coupling and flow in rectangular channel
The characteristics such as morphological feature and convective heat transfer, TRANSFER BY PULSATING FLOW, to differentiate supercritical pressure fluid heat transfer exception and TRANSFER BY PULSATING FLOW phenomenon
The physical mechanism and trigger condition of generation provide experimental data support.Now to the prior art, the beneficial effects of the present invention are:
1. in experimental provision of the present invention fluid channel skeleton using insulation, high rigidity, thermal coefficient greatly, abrasion performance and resistance to height
The special ceramic material of warm high pressure so that heating metal strip and the working fluid and experimental section are completely insulated, and admirably achieves
Hot-fluid heats boundary condition.
2. wall temperature measurement bottom hole portion is away from METAL HEATING PROCESS item and fluidic channel walls identity distance METAL HEATING PROCESS in experimental provision of the present invention
Item is equidistant, theoretical by one-dimensional heat conduction it is found that Thermocouple on Surface of Fuel Element can be convenient, quickly and accurately obtain fluid walls
Temperature.
3. external pressure protection chamber bearing capacity is stronger in experimental provision of the present invention, after pressurising, so that in Internal Experiment section,
External pressure is consistent, and efficiently solves the problems, such as that experimental section leakproofness due to Fluid pressure is excessively high is poor, it is ensured that experimental section internal pressure
Power can reach 2MPa or more.In addition, pressure protection is intracavitary to be filled with the nitrogen that thermal coefficient is 0.024W/mK, can effectively subtract
The thermal convection of slow middle layer, and then reduce the thermal loss of experimental section.
It is passed under the conditions of uniform heat flux 4. supercritical pressure fluid in rectangular channel may be implemented in experimental provision of the present invention
Thermal characteristics experiment carries out simultaneously with flow visual measurement, to explore supercritical pressure fluid under multi-boundary Condition coupling
The abnormal mechanism with flowing pulsation of heat transfer provides effective research means.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is provided by the present invention for supercritical pressure fluid flowing heat transfer visualized experiment under the conditions of uniform heat flux
The internal flow heat transfer experiment segment structure schematic diagram of device；
Fig. 2 is provided by the present invention for supercritical pressure fluid flowing heat transfer visualized experiment under the conditions of uniform heat flux
The structural schematic diagram of device；
Fig. 3 is provided by the present invention for supercritical pressure fluid flowing heat transfer visualized experiment under the conditions of uniform heat flux
The structural schematic diagram of device；
Fig. 4 is the schematic diagram of Section A-A in Fig. 3；
In figure: 1. insulated end covers；1.1. wire guide；2. connection end cap；2.1. thermocouple signal output terminal；2.2. electrode
Connection terminal；3. insulated enclosure gasket；4. pressurising chamber；4.1. intracavitary pressure charging pipe；4.2. working medium inlet tube；4.3. experimental section import
Pressure connecting pipe；5. can opticoel；6. flowing heat transfer experimental section；6.1. pressure-measuring pipe；6.2. METAL HEATING PROCESS item；6.3. lower cover；
6.4. fluid channel skeleton；6.5. upper press cover；6.6. Thermocouple on Surface of Fuel Element；6.7. fluid temperature (F.T.) measures thermocouple；6.8. close
Seal Graphite pad；6.9. visual window；7. pressure measuring cavity；7.1. intracavitary pressure-measuring pipe；7.2. working medium outlet tube；7.3. experimental section outlet pressure
Power connecting pipe.
Specific embodiment
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize that
Like that, without departing from the spirit or scope of the present invention, described embodiment can be modified by various different modes.
Therefore, attached drawing and description are considered essentially illustrative rather than restrictive.
Below in conjunction with attached drawing, the present invention will be described in detail.
As Figure 1-Figure 4, it shows provided by the present invention for supercritical pressure fluid stream under the conditions of uniform heat flux
Dynamic heat transfer visual experimental apparatus, described device include internal flow heat transfer experiment section and external pressure protection chamber two large divisions.
Flowing heat transfer experimental section 6 includes pressure-measuring pipe 6.1, METAL HEATING PROCESS item 6.2, lower cover 6.3, fluid channel skeleton 6.4, upper press cover
6.5, Thermocouple on Surface of Fuel Element 6.6, fluid temperature (F.T.) measurement thermocouple 6.7, sealed graphite gasket 6.8 and visual window 6.9；Pressure is protected
Shield chamber include insulated end cover 1, connection end cap 2, insulated enclosure gasket 3, pressurising chamber 4, can opticoel 5 and pressure measuring cavity 7.
Fluid channel skeleton 6.4 is made of aluminium oxide ceramics, and upper and lower two sides are machined with square groove, for placing gold
Belong to fire-bar 6.2, it is >=1.00 × 10 that METAL HEATING PROCESS item (6.2), which selects resistivity,-06The nichrome of Ω m；Import and export is attached
Nearly upside is provided with fluid thermometer hole, and downside is provided with static-pressure inlet.Upper and lower two glands are similarly alumina ceramic material, oxidation
Aluminium ceramic material is insulation, hardness be >=88MPa, thermal coefficient be >=25W/mK, it is maximum the use of temperature be >=1500 DEG C, resist
Compressive Strength is the >=alumina ceramic material of 2500MPa, is pressed on the upper and lower two sides of fluid channel skeleton 6.4 respectively.Upper press cover
6.5 are provided with fluid import and export temperature measured hole, wall temperature measurement hole and heating metal strip fairlead, 6.6 He of Thermocouple on Surface of Fuel Element
Fluid temperature (F.T.) measurement thermocouple 6.7, which is connected through a screw thread, to be fixed on upper press cover 6.5；Lower cover 6.3 is provided with fluid import and export pressure
Power measured hole, wall temperature measurement hole and heating metal strip fairlead, pressure-measuring pipe 6.1 and Thermocouple on Surface of Fuel Element 6.6 are connected by screw thread
It connects and is fixed on lower cover.Wherein, wall surface temperature is accurately measured for convenience, it is desirable that wall temperature measurement hole bottom is away from METAL HEATING PROCESS item
Distance and fluid walls identity distance METAL HEATING PROCESS item be equidistant.Fluid channel skeleton 6..4 arranged on left and right sides viewable portion is logical
Hole, surrounding have sealing waterline, and the visual window 6.9 with boss and sealing waterline is bolted on its left and right two
Side, centre are sealed by Graphite pad 6.8.6.4 import and export of fluid channel skeleton be threadedly coupled, respectively with working medium inlet tube
4.2 are connected with working medium outlet tube 7.2.Flowing heat transfer experimental section 6 is fixed on after assembling can be on the bracket in opticoel 5, then
It is sequentially connected insulated end cover 1, connection end cap 2, insulated enclosure gasket 3, pressurising chamber 4 and the pressure measuring cavity 7 of external pressure protection chamber, absolutely
Acies lid 1 (material selection maximum working pressure is the >=insulating materials of 3Mpa) is connected through a screw thread, and rest part passes through flange
Be connected, wherein can opticoel (5) and visual window (6.9) using it is maximum the use of temperature and pressure is respectively >=350 DEG C and >=3MPa
And light transmittance reaches 95% tempered glass.Experimental section import and export pressure-measuring pipe 6.1 respectively with experimental section inlet pressure connecting pipe
4.3 are connected with outlet pressure connecting pipe 7.3.All thermocouple connecting wires pass through thermocouple signal on flowing heat transfer experimental section 6
Output terminal 2.1 is connected with acquisition Instrumen device；2.2 inside of electrode connecting end is connected by conducting wire with METAL HEATING PROCESS item 6.2,
Outside is connected with DC power supply.All leading-out wire routing wires hole 1.1 exports.
When experimental provision works, the working fluid is flowed into from working medium inlet tube 4.2,6 after flowing heat transfer experimental section, by work
Matter liquid outlet 7.2 excludes.Uniform heat flux boundary condition is realized by electric heating METAL HEATING PROCESS item 6.2.Fluid import and export temperature
Degree measures thermocouple 6.7 by fluid temperature (F.T.) to measure, and metal mesh is installed before measurement point.Fluid import and export pressure is pressed by surveying
Pipe 6.1 is drawn by experimental section inlet pressure connecting pipe 4.3 and outlet pressure connecting pipe 7.3, external pressure transmitter.Experimental section
Wall temperature is measured by Thermocouple on Surface of Fuel Element 6.6, it is desirable that wall temperature measurement hole bottom and fluidic channel walls identity distance METAL HEATING PROCESS item
It is equidistant, can be facilitated by one-dimensional heat conduction theory, accurately obtain wall temperature.Working fluid temperature passes through DC power supply output power
It controls, pressure adjusted by counterbalance valve.At the same time, pressure charging pipe 4.1 is filled with to external pressure protection is intracavitary in transit chamber
The lower nitrogen of thermal coefficient guarantees that pressure protection chamber internal pressure is consistent with experimental section fluid pressure, not only solves in this way
It has determined experimental section sealing problem, has also effectively reduced its heat waste.Intracavitary pressure-measuring pipe 7.1 is separately connected pressure by three-way connection and becomes
Device and safety exhaust are sent to monitor protection cavity pressure.Light source and high speed camera be arranged in can 5 two sides of opticoel, alignment is real
Section visual window 6.9 is tested to be shot.The experimental provision, by controlled medium inlet temperature, pressure, flow, heating hot-fluid and
The parameters such as channel cross-section size are realized under multi-boundary Condition coupling to supercritical pressure fluid in rectangular channel to spreading
The research of heat, pulsating flow character and nowed forming feature.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (10)
1. one kind exists for supercritical pressure fluid flowing heat transfer visual experimental apparatus under the conditions of uniform heat flux, feature
In described device includes internal flow heat transfer experiment section and external pressure protection chamber；
Wherein the internal flow heat transfer experiment section includes fluid channel skeleton (6.4), the fluid channel skeleton (6.4)
Upper and lower two sides are each provided with groove, are each provided in upper and lower groove METAL HEATING PROCESS item (6.2), corresponding on the upper and lower groove
It is provided with gland；
The gland includes upper press cover (6.5) and lower cover (6.3), wherein being provided with fluid inlet on the upper press cover (6.5)
Temperature measured hole, fluid outlet temperature measured hole, wall temperature measurement hole, heating metal strip fairlead, Thermocouple on Surface of Fuel Element (6.6)
Thermocouple (6.7) are measured with fluid temperature (F.T.)；
Fluid inlet pressure measured hole, outlet pressure measured hole, wall temperature measurement hole, heating are provided on the lower cover (6.3)
Metal strip fairlead, pressure-measuring pipe (6.1) and Thermocouple on Surface of Fuel Element (6.6)；
The viewable portion of the fluid channel skeleton (6.4) is through-hole and surrounding is provided with waterline, the fluid channel skeleton (6.4)
Arranged on left and right sides be provided with visual window (6.9), centre by Graphite pad (6.8) seal；
The import and export of the fluid channel skeleton (6.4) is connected with working medium inlet tube (4.2) and working medium outlet tube (7.2) respectively；
The external pressure protection chamber covers outside the internal flow heat transfer experiment section, including insulated end cover (1), connection end cap
(2), insulated enclosure gasket (3), pressurising chamber (4), can opticoel (5) and pressure measuring cavity (7)；Wherein the insulated end cover (1) passes through spiral shell
Line connection, the connection end cap (2), insulated enclosure gasket (3), pressurising chamber (4), can opticoel (5) and pressure measuring cavity (7) pass through flange
It is connected.
2. the apparatus according to claim 1, which is characterized in that the Thermocouple on Surface of Fuel Element (6.6) and fluid temperature (F.T.) are surveyed
Calorimetric galvanic couple (6.7), which is connected through a screw thread, to be fixed on upper press cover；The pressure-measuring pipe (6.1) and Thermocouple on Surface of Fuel Element (6.6)
It is connected through a screw thread and is fixed on lower cover；And/or
The visual window (6.9) has boss and waterline, is bolted on the left and right two of the fluid channel skeleton (6.4)
Side；And/or
The import and export of the fluid channel skeleton (6.4) passes through with working medium inlet tube (4.2) and working medium outlet tube (7.2) respectively
Screw thread is connected.
3. device according to claim 1, which is characterized in that the lower cover (6.3), fluid channel skeleton (6.4) and upper
The material of gland (6.5) is insulation, hardness be >=88MPa, thermal coefficient be >=25W/mK, it is maximum the use of temperature is >=1500
DEG C, compression strength be the >=alumina ceramic material of 2500MPa.
4. the apparatus according to claim 1, which is characterized in that it is >=1.0 that the METAL HEATING PROCESS item (6.2), which selects resistivity,
×10-06The nichrome of Ω m；Can opticoel (5) and visual window (6.9) using it is maximum the use of temperature and pressure is respectively >=350
DEG C and >=3MPa and light transmittance reach 95% tempered glass.
5. the apparatus according to claim 1, which is characterized in that the internal flow heat transfer experiment segment length 320mm, and into,
Respectively there are a pressure tap and thermometer hole in outlet；The wall temperature measurement hole shares six pairs above and below.
6. the apparatus according to claim 1, which is characterized in that wall temperature is surveyed in the upper press cover (6.5), lower cover (6.3)
Metering-orifice bottom is equidistant away from METAL HEATING PROCESS item (6.2) and fluidic channel walls identity distance METAL HEATING PROCESS item (6.2).
7. the apparatus according to claim 1, which is characterized in that the internal flow heat transfer experiment section flow channel cross-sections ruler
Very little is 4 × 2mm.
8. the apparatus according to claim 1, which is characterized in that the insulated end cover (1) passes through internal screw thread and connection end cap
(2) it is connected, material selection maximum working pressure is the >=insulating materials of 3Mpa, and insulated end cover (1) side-lower is provided with conducting wire
Hole (1.1).
9. the apparatus according to claim 1, which is characterized in that the connection end cap (2) includes thermocouple signal output end
Sub (2.1) and electrode connecting end are sub (2.2), and side has external screw thread；All thermocouple connecting wires pass through thermocouple signal
Output terminal (2.1) is connected with acquisition Instrumen device；Pass through conducting wire and METAL HEATING PROCESS item inside electrode connecting end (2.2)
(6.2) it is connected, outside is connected with DC power supply.
10. the apparatus according to claim 1, which is characterized in that the pressurising chamber (4) is made of stainless steel, including intracavitary
Pressure charging pipe (4.1), working medium inlet tube (4.2) and experimental section inlet pressure connecting pipe (4.3)；And/or
The pressure measuring cavity (7) is made of stainless steel, including intracavitary pressure-measuring pipe (7.1), working medium outlet tube (7.2) and experimental section outlet
Pressure connecting pipe (7.3).
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| CN110265159A (en) * | 2019-06-24 | 2019-09-20 | 西安交通大学 | A kind of non-homogeneous indirect heating rectangular channel flow visual experimental rig of transverse direction |
| CN111398342A (en) * | 2020-04-16 | 2020-07-10 | 浙江大学 | Test method based on supercritical carbon dioxide differential scanning calorimeter |
| CN112213354A (en) * | 2020-10-23 | 2021-01-12 | 大连理工大学 | Visual supercritical carbon dioxide flow heat transfer experimental device |
| CN112908121A (en) * | 2021-02-07 | 2021-06-04 | 中国科学技术大学 | Supercritical carbon dioxide device for reactor thermal experiment teaching |
| CN114113214A (en) * | 2021-10-11 | 2022-03-01 | 四川大学 | Uniform high-temperature heat transfer characteristic testing device suitable for supercritical fluid |
| CN114942145A (en) * | 2022-05-20 | 2022-08-26 | 北京航空航天大学 | Single-side high-temperature equal-heat-flow heating experimental device for regenerative cooling structure |
| CN115683688A (en) * | 2023-01-05 | 2023-02-03 | 中国核动力研究设计院 | Microchannel heat exchanger flow distribution characteristic measuring device, method, equipment and medium |
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| CN110265159A (en) * | 2019-06-24 | 2019-09-20 | 西安交通大学 | A kind of non-homogeneous indirect heating rectangular channel flow visual experimental rig of transverse direction |
| CN110265159B (en) * | 2019-06-24 | 2020-07-10 | 西安交通大学 | Horizontal inhomogeneous indirect heating rectangle passageway flow visual test device |
| CN111398342A (en) * | 2020-04-16 | 2020-07-10 | 浙江大学 | Test method based on supercritical carbon dioxide differential scanning calorimeter |
| CN111398342B (en) * | 2020-04-16 | 2021-05-14 | 浙江大学 | Test method based on supercritical carbon dioxide differential scanning calorimeter |
| CN112213354A (en) * | 2020-10-23 | 2021-01-12 | 大连理工大学 | Visual supercritical carbon dioxide flow heat transfer experimental device |
| CN112908121A (en) * | 2021-02-07 | 2021-06-04 | 中国科学技术大学 | Supercritical carbon dioxide device for reactor thermal experiment teaching |
| CN112908121B (en) * | 2021-02-07 | 2022-03-01 | 中国科学技术大学 | Supercritical carbon dioxide device for reactor thermal experiment teaching |
| CN114113214A (en) * | 2021-10-11 | 2022-03-01 | 四川大学 | Uniform high-temperature heat transfer characteristic testing device suitable for supercritical fluid |
| CN114113214B (en) * | 2021-10-11 | 2023-08-01 | 四川大学 | Uniform high-temperature heat transfer characteristic testing device suitable for supercritical fluid |
| CN114942145A (en) * | 2022-05-20 | 2022-08-26 | 北京航空航天大学 | Single-side high-temperature equal-heat-flow heating experimental device for regenerative cooling structure |
| CN115683688A (en) * | 2023-01-05 | 2023-02-03 | 中国核动力研究设计院 | Microchannel heat exchanger flow distribution characteristic measuring device, method, equipment and medium |
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